Question: 1. Let = {a,b} and consider languages A = {ba, bb, b} and B = {ab, aa,a} (a) Write down all strings in *

1. Let = {a,b} and consider languages A = {ba, bb, b} and B = {ab, aa,a} (a) Write down all strings in * that have length at most two. (b) How many strings are in AB? Write down all of them. (c) How many strings are in B. A? Write down all of them.

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